[jira] [Created] (SPARK-7982) crosstab should use 0 instead of null for pairs that don't appear

["Reynold Xin (JIRA)" <ji...@apache.org>]

Reynold Xin created SPARK-7982:
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             Summary: crosstab should use 0 instead of null for pairs that don't appear
                 Key: SPARK-7982
                 URL: https://issues.apache.org/jira/browse/SPARK-7982
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
            Reporter: Reynold Xin
            Assignee: Burak Yavuz


See the following
{code}
In [79]: sqlContext.range(0, 10).stat.crosstab('id', 'id').show()
+-----+----+----+----+----+----+----+----+----+----+----+
|id_id|   0|   5|   1|   6|   9|   2|   7|   3|   8|   4|
+-----+----+----+----+----+----+----+----+----+----+----+
|    0|   1|null|null|null|null|null|null|null|null|null|
|    5|null|null|null|null|null|   1|null|null|null|null|
|    1|null|   1|null|null|null|null|null|null|null|null|
|    6|null|null|null|null|null|null|   1|null|null|null|
|    9|null|null|null|null|null|null|null|null|null|   1|
|    2|null|null|   1|null|null|null|null|null|null|null|
|    7|null|null|null|null|null|null|null|   1|null|null|
|    3|null|null|null|   1|null|null|null|null|null|null|
|    8|null|null|null|null|null|null|null|null|   1|null|
|    4|null|null|null|null|   1|null|null|null|null|null|
+-----+----+----+----+----+----+----+----+----+----+----+
{code}

I think we should use 0 instead of null for these columns.




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